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A study of the time spent shopping in a supermarket for 20 specific items showed an...

A study of the time spent shopping in a supermarket for 20 specific items showed an approximately uniform distribution between 15 minutes and 35 minutes.

a. What is the probability that the shopping time will be between 21 and 30 ​minutes?

b. What is the probability that the shopping time will be less than 26 ​minutes?

c. What are the mean and standard deviation of the shopping​ time?

Math   Statistics-And-Probability   
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